rb_gc_mark_maybe 5369 parse.y            rb_gc_mark_maybe((VALUE)yylval.node);
rb_gc_mark_maybe 426 variable.c         if (data) rb_gc_mark_maybe(data);
rb_gc_mark_maybe 451 variable.c         if (var) rb_gc_mark_maybe(*var);
rb_gc_mark_maybe 474 variable.c     	if (trace->data) rb_gc_mark_maybe(trace->data);